NZ772869A - Capacitance reduction in battery systems - Google Patents

Capacitance reduction in battery systems

Info

Publication number
NZ772869A
NZ772869A NZ772869A NZ77286918A NZ772869A NZ 772869 A NZ772869 A NZ 772869A NZ 772869 A NZ772869 A NZ 772869A NZ 77286918 A NZ77286918 A NZ 77286918A NZ 772869 A NZ772869 A NZ 772869A
Authority
NZ
New Zealand
Prior art keywords
conducting layer
battery cell
thermally conducting
discontinuities
thermally
Prior art date
Application number
NZ772869A
Other versions
NZ772869B2 (en
Inventor
Sampson Lau
John Melack
Thomas Muniz
Nihal Murthy
Original Assignee
Wisk Aero Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wisk Aero Llc filed Critical Wisk Aero Llc
Priority to NZ803261A priority Critical patent/NZ803261B2/en
Publication of NZ772869A publication Critical patent/NZ772869A/en
Publication of NZ772869B2 publication Critical patent/NZ772869B2/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/231—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H02J7/345—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering using capacitors as storage or buffering devices
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

A battery system includes a battery cell, a thermally insulating layer, and a thermally conducting layer which includes a fin. The fin pushes against an interior surface of a case which surrounds the battery cell, the thermally insulating layer, and the thermally conducting layer. The thermally conducting layer includes a discontinuity where the discontinuity is configured to reduce a capacitance associated with the thermally conducting layer compared to when the thermally conducting layer does not include the discontinuity.

Claims (12)

1. A system, comprising: a battery cell; a thermally insulating layer; a thermally conducting layer which includes a plurality of fins, wherein: the plurality of fins are configured to push against an interior surface of a case which surrounds the battery cell, the thermally insulating layer, and the thermally conducting layer; and the thermally conducting layer includes a plurality of discontinuities, wherein the plurality of discontinuities are configured to reduce a capacitance associated with the thermally conducting layer compared to when the thermally conducting layer does not include the plurality of discontinuities; and a path which includes the plurality of fins and the case includes an insulator that increases electrical insulation and does not substantially increase thermal insulation; wherein the insulator that increases electrical insulation and does not substantially increase thermal insulation is formed in form of one of: a layer of insulating material provided between the fin and the case; a layer of insulating material deposited on at least a tip of the fin; an anodized tip of the fin; or an anodized interior surface of the case.
2. The system recited in claim 1, wherein: the thermally conducting layer includes a plurality of planar portions, including the plurality of fins and a portion which is in contact with the battery cell; and the portion which is in contact with the battery cell includes the plurality of discontinuities.
3. The system recited in claim 1, wherein: the thermally conducting layer includes a plurality of planar portions, including the plurality of fins and a portion which is in contact with the battery cell; and at least one of the plurality of fins includes one or more of the plurality of discontinuities.
4. The system recited in claim 1, wherein: the thermally conducting layer includes a plurality of planar portions, including a left fin, a right fin, and a portion which is in contact with the battery cell; the portion which is in contact with the battery cell includes the plurality of discontinuities; and one or more of the plurality of discontinuities has a first distal end pointing towards the left fin and a second distal end pointing towards the right fin.
5. The system recited in claim 1, wherein any change in thermal conductivity is within
6. The system recited in claim 1, further comprising: a first battery sub-module that includes the battery cell, the thermally insulating layer, and the thermally conducting layer; a second battery sub-module that includes a second battery cell, a second thermally insulating layer, and a second thermally conducting layer; and a frame provided around the first battery sub-module and the second battery sub- module, wherein the frame includes an insulating portion that increases electrical insulation between the first battery sub-module and the second battery sub-module.
7. A method, comprising: providing a battery cell; providing a thermally insulating layer; providing a thermally conducting layer which includes a plurality of fins, wherein: the plurality of fins are configured to push against an interior surface of a case which surrounds the battery cell, the thermally insulating layer, and the thermally conducting layer; forming a plurality of discontinuities on the thermally conducting layer, wherein the plurality of discontinuities reduce a capacitance associated with the thermally conducting layer compared to when the thermally conducting layer does not include the plurality of discontinuities; stacking at least the battery cell, the thermally insulating layer and the thermally conducting layer including the plurality of discontinuities into a battery submodule, wherein the battery submodule is provided in the case; and forming a path which includes the plurality of fins and the case, wherein the path includes an insulator that increases electrical insulation and does not substantially increase thermal insulation, wherein the insulator that increases electrical insulation and does not substantially increase thermal insulation is formed in form of one of: a layer of insulating material provided between the fin and the case; a layer of insulating material deposited on at least a tip of the fin; an anodized tip of the fin; or an anodized interior surface of the case.
8. The method recited in claim 7, wherein: the thermally conducting layer includes a plurality of planar portions, including the plurality of fins and a portion which is in contact with the battery cell; and the portion which is in contact with the battery cell includes the plurality of discontinuities.
9. The method recited in claim 7, wherein: the thermally conducting layer includes a plurality of planar portions, including the plurality of fins and a portion which is in contact with the battery cell; and at least one of the plurality of fins include one or more of the plurality of discontinuities.
10. The method recited in claim 7, wherein: the thermally conducting layer includes a plurality of planar portions, including a left fin, a right fin, and a portion which is in contact with the battery cell; the portion which is in contact with the battery cell includes the plurality of discontinuities; and one or more of the plurality of discontinuities has a first distal end pointing towards the left fin and a second distal end pointing towards the right fin.
11. The method recited in claim 7, wherein any change in thermal conductivity is within
12. The method recited in claim 7, further comprising: providing a first battery sub-module that includes the battery cell, the thermally insulating layer, and the thermally conducting layer; providing a second battery sub-module that includes a second battery cell, a second thermally insulating layer, and a second thermally conducting layer; and providing a frame which is configured to hold the first battery sub-module and the second battery sub-module and the frame includes an insulating portion that is configured to increase electrical insulation between the first battery sub-module and the second battery sub- module.
NZ772869A 2018-09-04 Capacitance reduction in battery systems NZ772869B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NZ803261A NZ803261B2 (en) 2018-09-04 Capacitance reduction in battery systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16/102,315 US10593920B2 (en) 2018-08-13 2018-08-13 Capacitance reduction in battery systems
PCT/US2018/049375 WO2020036612A1 (en) 2018-08-13 2018-09-04 Capacitance reduction in battery systems

Publications (2)

Publication Number Publication Date
NZ772869A true NZ772869A (en) 2025-05-30
NZ772869B2 NZ772869B2 (en) 2025-09-02

Family

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Also Published As

Publication number Publication date
EP3837733A1 (en) 2021-06-23
EP3837733A4 (en) 2022-05-04
US20220021057A1 (en) 2022-01-20
JP2022503550A (en) 2022-01-12
KR102803024B1 (en) 2025-05-07
US20200176737A1 (en) 2020-06-04
US10593920B2 (en) 2020-03-17
CA3108660A1 (en) 2020-02-20
AU2018436515B2 (en) 2024-11-21
WO2020036612A1 (en) 2020-02-20
US20200052256A1 (en) 2020-02-13
US12021408B2 (en) 2024-06-25
US11114725B2 (en) 2021-09-07
CN112805858A (en) 2021-05-14
JP7416763B2 (en) 2024-01-17
CN112805858B (en) 2024-12-17
AU2025200929A1 (en) 2025-02-27
AU2018436515A1 (en) 2021-03-11
US20240339860A1 (en) 2024-10-10
KR20210044816A (en) 2021-04-23

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