WO2011155834A1 - Battery and method of manufacture thereof - Google Patents

Battery and method of manufacture thereof Download PDF

Info

Publication number
WO2011155834A1
WO2011155834A1 PCT/NL2011/050412 NL2011050412W WO2011155834A1 WO 2011155834 A1 WO2011155834 A1 WO 2011155834A1 NL 2011050412 W NL2011050412 W NL 2011050412W WO 2011155834 A1 WO2011155834 A1 WO 2011155834A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
circuit board
casing
opening
electrolyte
Prior art date
Application number
PCT/NL2011/050412
Other languages
French (fr)
Inventor
Daniel Simon
Franciscus Ooms
Original Assignee
Nedusa Em
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 Nedusa Em filed Critical Nedusa Em
Publication of WO2011155834A1 publication Critical patent/WO2011155834A1/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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0436—Small-sized flat cells or batteries for portable equipment
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • 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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/147—Lids or covers
    • 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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/182—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells with a collector centrally disposed in the active mass, e.g. Leclanché 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
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/193—Organic 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/545—Terminals formed by the casing of the 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a battery.
  • the invention further relates to a method of manufacture of a battery.
  • the object of the present invention is to provide a battery with an increased stored energy per volume ratio compared to batteries of the prior art.
  • the present invention provides a battery comprising: a casing enclosing an electrolyte wherein the casing has an opening; a circuit board comprising a battery management circuit; wherein the circuit board is mounted in or on the opening of the casing, closing off the casing and isolating the electrolyte from the surroundings of the battery .
  • Batteries from the prior art comprise a battery casing holding the electrolyte.
  • An additional circuit (a battery management circuit) is provided to provide one or more of the following functions: protecting the battery against excessive voltages, excessive currents and/or excessive temperatures; providing the battery charging algorithm; optimising health and efficiency by controlling the charge cycles; providing data on the battery, such as battery health condition and depth of discharge.
  • the battery management circuit is provided on the main circuit board of the mobile device.
  • the battery management circuit is attached to the exterior of the battery, for example by gluing.
  • Usually some additional packaging is provided around the stack formed the battery and the battery management circuit. This packaging often takes the form of some foil wrap, or a thin plastic case that has been cast around the stack .
  • the present invention requires less volume, for the combination of the battery and the battery management circuit, as the circuit board of the battery management circuit itself functions as part of the casing of the battery. It is the circuit board that prohibits the
  • electrolyte from spilling out of the casing and provides electrical contact to the outside of the casing.
  • the circuit board is not limited to the classic examples of ceramic based or epoxy resin based printed circuit boards, but also includes insulating foils with printed circuits, such as Kapton°. Depending on the actual shape and construction of the casing and the opening, it suffices in some particular embodiments if the circuit board is just strong enough to prevent ripping or puncturing. In these embodiments structural stiffness is provided by the casing. Furthermore, the circuit board could be a packaged integrated circuit, wherein the package serves as part of the casing of the battery too. In a further embodiment the battery management circuit is mounted on the outer side of the circuit board. On the outer side, the electronic components of the battery management circuit are protected by the circuit board from being chemically affected by the electrolyte. It also prevents unwanted currents or voltages in the battery management circuit due to any unwanted electrical contact between the components and the electrolyte.
  • a battery is provided, wherein the circuit board is attached in or on the opening of the casing by means of a resin.
  • a battery is provided, wherein the circuit board is attached in or on the opening of the casing by means of welding.
  • the means of attaching the circuit board to the casing should seal off the opening in order to prevent spilling of
  • the present invention provides a battery, wherein the circuit board comprises electronic components and an external terminal, and wherein the electronic components are covered by resin and the external terminal is protruding out of the resin.
  • the electronic components are protected by the layer of resin.
  • terminals may provide functions such as positive or negative charge or drain terminal, common charge/drain terminal, data terminal for providing charged capacity information, cycle counter information, battery temperature, and battery condition.
  • bypass terminals are provided that connect straight to the anode and cathode of the cell, bypassing the the battery management circuit. This way a system designer may decide to employ a battery management circuit of his own choosing.
  • the invention provides a battery, wherein the circuit board further comprises a through-hole for releasing a fluid from the battery.
  • the through-hole acts as on overpressure release as an added security measure if the overcharging protection of the battery management circuit fails. Additionally, the through-hole may serve for filling the battery with the electrolyte.
  • a battery wherein the circuit board comprises an electrode on its inner side.
  • the electrode serves as one of the two
  • the invention provides a battery, wherein the electrode comprised on the circuit board comprises the anode. In an alternative embodiment, the electrode comprises the cathode.
  • the present invention also provides a battery, wherein the electrode comprised on the circuit board is connected with a conductor on the outer side of the circuit board by means of a through-hole in the circuit board comprising an electrical conductor.
  • the through-hole with the electrical conductor provides electrical contact between one of the electrodes of the cell, and the battery
  • the through-hole is a metallised through-hole.
  • a battery is provided, wherein the casing forms an electrode of the battery. Furthermore, the casing is connected to a terminal on the circuit board, to connect the battery management circuit with the second pole of the cell.
  • This connection might in one embodiment be a soldered connection, or in an alternative embodiment a conductive resilient contact, such as a spring contact.
  • the casing does not have a double function as an electrode, but an additional electrode is provided in the battery, for example as a second electrode provided on the circuit board.
  • an additional electrode is provided in the battery, for example as a second electrode provided on the circuit board.
  • a battery is provided, wherein the casing forms the cathode of the battery. In an alternative embodiment, the casing forms the anode of the battery .
  • the present invention also provides a method of manufacturing a battery comprising the steps of: - providing a casing with an opening; - filling the casing with an electrolyte; - providing a circuit board comprising a battery management circuit; and - mounting the circuit board in or on the opening such that the opening is closed off.
  • the present invention provides a method, wherein the circuit board comprises a through-hole, and wherein the step of filling the casing with an
  • electrolyte comprises injecting the electrolyte into the casing through the through-hole in the circuit board.
  • Figure 1 shows a schematic sectional drawing of a battery according to the present invention.
  • a battery 100 (figure 1) comprises a casing 110 that is filled with electrolyte 120.
  • the casing is made of metal and forms the cathode of the cell.
  • the casing 110 is open at the top side.
  • a circuit board 130 is inserted into the opening to close off the opening.
  • a resin layer 140 is used to fix the circuit board 130 in the opening of the casing 110.
  • the circuit board 130 comprises electrical components 132a, 132b, including an integrated circuit 132a that implements a battery management circuit to control the charging process and to protect the battery against
  • the integrated circuit 132a comprises a temperature sensor.
  • the circuit board 130 further comprises a metallised through-hole 136a, the metal in the through-hole forming a conductor that electrically connects an anode electrode 134 of the cell at the inner side of the circuit board 130 to the printed circuit (not shown) at the outer side of the circuit board 130.
  • a spring contact 139 engages with the inside of the metal casing 110, in order to electrically connect the circuit board 130 to the cathode electrode of the cell.

Abstract

Battery comprising: a casing enclosing an electrolyte, wherein the casing has an opening; a circuit board comprising a battery management circuit; wherein the circuit board is mounted in or on the opening of the casing, closing off the casing and isolating the electrolyte.

Description

Battery and method of manufacture thereof
The present invention relates to a battery.
The invention further relates to a method of manufacture of a battery.
The last decade has shown an incredible increase in the use of mobile devices. All these mobile devices need to be powered. The vast majority of mobile devices is powered by rechargeable batteries. The battery usually takes up quite a significant amount of volume and/or mass of the mobile device. The volume and mass of mobile devices is an important issue to the end-user. At the other hand, the volume and mass of a battery limits the amount of energy the battery can store. A lot of research has been devoted to increase the stored energy per volume ratio of batteries.
As mobile devices are still being further reduced in size, and their computational power and therefore energy consumption is still increasing, there still is a demand for batteries with a higher energy volume ratio.
The object of the present invention is to provide a battery with an increased stored energy per volume ratio compared to batteries of the prior art.
The present invention provides a battery comprising: a casing enclosing an electrolyte wherein the casing has an opening; a circuit board comprising a battery management circuit; wherein the circuit board is mounted in or on the opening of the casing, closing off the casing and isolating the electrolyte from the surroundings of the battery .
Batteries from the prior art comprise a battery casing holding the electrolyte. An additional circuit (a battery management circuit) is provided to provide one or more of the following functions: protecting the battery against excessive voltages, excessive currents and/or excessive temperatures; providing the battery charging algorithm; optimising health and efficiency by controlling the charge cycles; providing data on the battery, such as battery health condition and depth of discharge. In some prior art embodiments the battery management circuit is provided on the main circuit board of the mobile device. In other prior art embodiments the battery management circuit is attached to the exterior of the battery, for example by gluing. Usually some additional packaging is provided around the stack formed the battery and the battery management circuit. This packaging often takes the form of some foil wrap, or a thin plastic case that has been cast around the stack .
The present invention requires less volume, for the combination of the battery and the battery management circuit, as the circuit board of the battery management circuit itself functions as part of the casing of the battery. It is the circuit board that prohibits the
electrolyte from spilling out of the casing and provides electrical contact to the outside of the casing.
The circuit board is not limited to the classic examples of ceramic based or epoxy resin based printed circuit boards, but also includes insulating foils with printed circuits, such as Kapton°. Depending on the actual shape and construction of the casing and the opening, it suffices in some particular embodiments if the circuit board is just strong enough to prevent ripping or puncturing. In these embodiments structural stiffness is provided by the casing. Furthermore, the circuit board could be a packaged integrated circuit, wherein the package serves as part of the casing of the battery too. In a further embodiment the battery management circuit is mounted on the outer side of the circuit board. On the outer side, the electronic components of the battery management circuit are protected by the circuit board from being chemically affected by the electrolyte. It also prevents unwanted currents or voltages in the battery management circuit due to any unwanted electrical contact between the components and the electrolyte.
In one embodiment a battery is provided, wherein the circuit board is attached in or on the opening of the casing by means of a resin.
In an alternative embodiment a battery is provided, wherein the circuit board is attached in or on the opening of the casing by means of welding.
Specifically when a fluid electrolyte is used, the means of attaching the circuit board to the casing should seal off the opening in order to prevent spilling of
electrolyte .
In a further embodiment the present invention provides a battery, wherein the circuit board comprises electronic components and an external terminal, and wherein the electronic components are covered by resin and the external terminal is protruding out of the resin. The electronic components are protected by the layer of resin. As the terminal protrudes out of the resin, it is still possible to make electrical contact with the terminal. In particular embodiments, terminals may provide functions such as positive or negative charge or drain terminal, common charge/drain terminal, data terminal for providing charged capacity information, cycle counter information, battery temperature, and battery condition. Furthermore, in a specific embodiment bypass terminals are provided that connect straight to the anode and cathode of the cell, bypassing the the battery management circuit. This way a system designer may decide to employ a battery management circuit of his own choosing.
In a further embodiment, the invention provides a battery, wherein the circuit board further comprises a through-hole for releasing a fluid from the battery.
Specifically for batteries where gas might be released, for example during overcharging, the through-hole acts as on overpressure release as an added security measure if the overcharging protection of the battery management circuit fails. Additionally, the through-hole may serve for filling the battery with the electrolyte.
In a preferred embodiment, a battery is provided, wherein the circuit board comprises an electrode on its inner side. The electrode serves as one of the two
electrodes of the electrochemical cell.
In a specific further embodiment, the invention provides a battery, wherein the electrode comprised on the circuit board comprises the anode. In an alternative embodiment, the electrode comprises the cathode.
The present invention also provides a battery, wherein the electrode comprised on the circuit board is connected with a conductor on the outer side of the circuit board by means of a through-hole in the circuit board comprising an electrical conductor. The through-hole with the electrical conductor provides electrical contact between one of the electrodes of the cell, and the battery
management circuit on the circuit board. In one specific embodiment, the through-hole is a metallised through-hole.
In another preferred embodiment, a battery is provided, wherein the casing forms an electrode of the battery. Furthermore, the casing is connected to a terminal on the circuit board, to connect the battery management circuit with the second pole of the cell. This connection might in one embodiment be a soldered connection, or in an alternative embodiment a conductive resilient contact, such as a spring contact.
In an alternative embodiment, the casing does not have a double function as an electrode, but an additional electrode is provided in the battery, for example as a second electrode provided on the circuit board. This is specifically advantageous if the electrode is subjected to chemical decomposition due to the chemo-electrical reactions going on in the cell. However, if the electrode is not subjected to decomposition, the above mentioned embodiment where the casing serves as a electrode is advantageous due to the reduced volume and/or mass of the battery.
In a further embodiment, a battery is provided, wherein the casing forms the cathode of the battery. In an alternative embodiment, the casing forms the anode of the battery .
The present invention also provides a method of manufacturing a battery comprising the steps of: - providing a casing with an opening; - filling the casing with an electrolyte; - providing a circuit board comprising a battery management circuit; and - mounting the circuit board in or on the opening such that the opening is closed off.
Furthermore, the present invention provides a method, wherein the circuit board comprises a through-hole, and wherein the step of filling the casing with an
electrolyte comprises injecting the electrolyte into the casing through the through-hole in the circuit board.
Further advantages and additional embodiments will be described below with reference to the accompanying figures, wherein: Figure 1 shows a schematic sectional drawing of a battery according to the present invention.
A battery 100 (figure 1) comprises a casing 110 that is filled with electrolyte 120. The casing is made of metal and forms the cathode of the cell. The casing 110 is open at the top side. A circuit board 130 is inserted into the opening to close off the opening. A resin layer 140 is used to fix the circuit board 130 in the opening of the casing 110. The circuit board 130 comprises electrical components 132a, 132b, including an integrated circuit 132a that implements a battery management circuit to control the charging process and to protect the battery against
excessive voltage, excessive current, and excessive
temperatures. To that extend, the integrated circuit 132a comprises a temperature sensor.
The circuit board 130 further comprises a metallised through-hole 136a, the metal in the through-hole forming a conductor that electrically connects an anode electrode 134 of the cell at the inner side of the circuit board 130 to the printed circuit (not shown) at the outer side of the circuit board 130.
A spring contact 139 engages with the inside of the metal casing 110, in order to electrically connect the circuit board 130 to the cathode electrode of the cell.
External terminals 138a-c extend out of the resin
140 from the circuit board 130, and provide a positive contact 138a and negative contact 138b for charging the battery and draining the battery, and a data contact 138c for providing information such as a cycle counter and depth of discharge.
It should be noted that the embodiments shown in the figure and described above are exemplary embodiments and should not be regarded as limiting. It is clear to the person skilled in the art that the features of the above described embodiments, as far as they are not specifically described as alternatives, can be combined into further embodiments according to the present invention. Furthermore the person skilled in the art will foresee several
modifications and adaptations within the scope of the present invention. The protection sought is therefore only limited by the following claims.

Claims

Claims
1. Battery comprising:
a casing enclosing an electrolyte, wherein the casing has an opening;
a circuit board comprising a battery management circuit ;
wherein the circuit board is mounted in or on the opening of the casing, closing off the casing and isolating the electrolyte.
2. Battery according to claim 1, wherein the battery management circuit is mounted on the outer side of the circuit board.
3. Battery according to claim 1 or 2, wherein the circuit board is attached in or on the opening of the casing by means of a resin.
4. Battery according to claim 1 or 2, wherein the circuit board is attached in or on the opening of the casing by means of welding.
5. Battery according to claim 2, 3, or 4, wherein the circuit board comprises electronic components and an external terminal, and wherein the electronic components are covered by resin and the external terminal is protruding out of the resin.
6. Battery according to any of claims 1-5, wherein the circuit board further comprises a through-hole for releasing a fluid from the battery.
7. Battery according to any of claims 1-6, wherein the circuit board comprises an electrode on its inner side.
8. Battery according to claim 7, wherein the electrode comprised on the circuit board comprises the anode .
9. Battery according to claim 7 or 8, wherein the electrode comprised on the circuit board is connected with a conductor on the outer side of the circuit board by means of a through-hole in the circuit board comprising an electrical conductor .
10. Battery according to any of claims 1-9, wherein the casing forms an electrode of the battery.
11. Battery according to claim 10, wherein the casing forms the cathode of the battery.
12. Method of manufacturing a battery comprising the steps of:
- providing a casing with an opening;
- filling the casing with an electrolyte;
- providing a circuit board comprising a battery management circuit; and
- mounting the circuit board in or on the opening such that the opening is closed off.
13. Method according to claim 12, wherein the circuit board comprises an through-hole, and wherein the step of filling the casing with an electrolyte comprises injecting the electrolyte into the casing through the through-hole in the circuit board.
PCT/NL2011/050412 2010-06-09 2011-06-08 Battery and method of manufacture thereof WO2011155834A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2004862A NL2004862C2 (en) 2010-06-09 2010-06-09 Battery and method of manufacture thereof.
NL2004862 2010-06-09

Publications (1)

Publication Number Publication Date
WO2011155834A1 true WO2011155834A1 (en) 2011-12-15

Family

ID=43063524

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2011/050412 WO2011155834A1 (en) 2010-06-09 2011-06-08 Battery and method of manufacture thereof

Country Status (2)

Country Link
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WO (1) WO2011155834A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6319631B1 (en) * 1999-09-08 2001-11-20 Motorola, Inc. Contact system for interconnection of substrate and battery cell
US6524732B1 (en) * 1999-03-30 2003-02-25 Matsushita Electric Industrial Co., Ltd. Rechargeable battery with protective circuit
US20050266279A1 (en) * 2004-05-31 2005-12-01 Kim Jun H Rechargeable battery
US20080171235A1 (en) * 2007-01-17 2008-07-17 Kyungwon Seo Rechargeable battery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6524732B1 (en) * 1999-03-30 2003-02-25 Matsushita Electric Industrial Co., Ltd. Rechargeable battery with protective circuit
US6319631B1 (en) * 1999-09-08 2001-11-20 Motorola, Inc. Contact system for interconnection of substrate and battery cell
US20050266279A1 (en) * 2004-05-31 2005-12-01 Kim Jun H Rechargeable battery
US20080171235A1 (en) * 2007-01-17 2008-07-17 Kyungwon Seo Rechargeable battery

Also Published As

Publication number Publication date
NL2004862C2 (en) 2011-12-13

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