EP0390070B1 - Electrode construction of battery in electrical equipment - Google Patents
Electrode construction of battery in electrical equipment Download PDFInfo
- Publication number
- EP0390070B1 EP0390070B1 EP90105810A EP90105810A EP0390070B1 EP 0390070 B1 EP0390070 B1 EP 0390070B1 EP 90105810 A EP90105810 A EP 90105810A EP 90105810 A EP90105810 A EP 90105810A EP 0390070 B1 EP0390070 B1 EP 0390070B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- battery
- minus
- electrode
- pole
- contacts
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 238000010276 construction Methods 0.000 title claims description 16
- 239000004065 semiconductor Substances 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 description 5
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
- H01R13/2464—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the contact point
- H01R13/2492—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the contact point multiple contact points
Definitions
- the present invention relates to an electrode construction of a battery in an electrical equipment, such as an IC card.
- Fig. 7 is a perspective view showing a conventional electrode construction of a battery in an IC card.
- a battery 1 has a minus pole 2 and a plus pole 3.
- a minus electrode 4 has two minus-pole contacts 5a and 5b to be connected with the minus pole 2 of the battery 1 respectively, and a fixing part 6 fixed in a battery chamber (not shown) of an IC card.
- the fixing part 6 is electrically connected with an electric circuit (not shown) of the IC card, the electric circuit having semiconductor elements to store storage data.
- Both of the minus-pole contacts 5a and 5b are formed so as to have the same shape (in length, width, thickness and so on) with each other.
- a plus electrode 7 has two plus-pole contacts 8a and 8b to be connected with the plus pole 3 of the battery 1 respectively, 80 and a fixing part 9 fixed in the battery chamber of the IC card.
- the fixing part 9 is electrically connected with the electric circuit of the IC card.
- Both of the plus-pole contacts 8a and 8b are formed so as to have the same shape with each other.
- the minus pole 2 When the battery 1 is detachably installed in the battery chamber of the IC card, the minus pole 2 is electrically connected with the minus electrode 4 through the minus-pole contacts 5a and 5b, while the plus pole 3 is electrically connected with the plus electrode 7 through the plus-pole contacts 8a and 8b.
- an electrical power of the battery 1 is supplied to the electric circuit of the IC card through the minus and plus electrodes 4 and 7.
- the minus-pole contacts 5a and 5b of the minus electrode 4 have a characteristic frequency ⁇ , respectively.
- the minus-pole contacts 5a and 5b have the same characteristic frequency with each other since they have the same shape, and the plus-pole contacts 8a and 8b have the same characteristic frequency with each other by the same reason.
- both of the minus-pole contacts 5a and 5b simultaneously oscillate and move away from the minus pole 2 of the battery 1, whereby the power supply from the battery 1 to the electric circuit of the IC card is cut off eliminating the storage data stored in the semiconductor elements of the electric circuit.
- a principal object of the present invention is to provide an electrode construction of a battery in an electrical equipment which can maintain a power supply from the battery through the minus and plus electrodes in a reliable manner, even if an oscillation with any frequency is applied to the electrical equipment and the respective electrodes.
- the present invention is directed to an electrode construction of a battery in an electrical equipment, wherein the electrical equipment comprises a battery chamber, a plus electrode and minus electrode provided in the battery chamber, respectively, and a battery having a plus pole to be connected with the plus electrode and a minus pole to be connected with the minus electrode in a state so that the battery is detachably installed in the battery chamber, wherein the plus electrode and/or the minus electrode comprise a plurality of contacts to be connected with the battery, and is characterised by at least two contacts out of the plurality of contacts having a different shape from each other.
- the characteristic frequencies of these contacts are different from each other.
- the other contact keeps in contact with the battery without resonating.
- Fig. 1 is a perspective view showing an IC card to which an embodiment of the present invention is applied
- Fig. 2 is a horizontal sectional view of a main part of the IC card
- Fig. 3 is a vertical sectional view of the main part of the IC card
- Fig. 4 is a perspective view showing an embodiment of an electrode construction according to the present invention.
- An IC card 10 has a body 11 in which an electric circuit 12 is formed.
- the electric circuit 12 has semiconductor elements to store storage data.
- a battery chamber 13 is formed in the body 11, and the battery 1 having a minus pole 2 and a plus pole 3 is detachably installed in the battery chamber 13 through a battery holder 14.
- the battery holder 14 has a supporting part 15 for supporting the battery 1 and convex parts 16 for detachably engaging with recessed parts 17 formed in the battery chamber 13, respectively.
- a minus electrode 4 has two minus-pole contacts 5a and 5b to be connected with the minus pole 2 of the battery 1, respectively, and a fixing part 6 fixed in the battery chamber 13.
- the fixing part 6 is electrically connected with the electric circuit 12.
- Both of the minus-pole contacts 5a and 5b are formed in a strip-shape. respectively, and having a different length from each other.
- a plus electrode 7 has two plus-pole contacts 8a and 8b to be connected with the plus pole 3 of the battery 1, respectively, and a fixing part 9 is fixed in the battery chamber 13.
- the fixing part 9 is electrically connected with the electric circuit 12.
- Both of the plus-pole contacts 8a and 8b are formed so as to have the same shape with each other.
- the minus pole 2 of the battery 1 is electrically connected with the minus electrode 4 through the minus-pole contacts 5a and 5b, while the plus pole 3 is electrically connected with the plus electrode 7 through the plus-pole contacts 8a and 8b.
- an electrical power of the battery 1 is supplied to the electric circuit 12 through the minus and plus electrodes 4 and 7.
- the minus-pole contacts 5a and 5b have a different length from each other, the characteristic frequencies of the minus-pole contacts 5a and 5b are different from each other. Therefore, when an oscillation having a frequency resonating with respect to the characteristic frequency of the minus-pole contact 5a is applied to the IC card 10, the minus-pole contact 5a will oscillate and move away or depart from the minus pole 2 of the battery 1. However, the minus-pole contact 5b will neither oscillate nor depart from the minus pole 2 at this very frequency which is different from its characteristic frequency, so that the electric power of the battery 1 will be applied to the electric circuit 12 through the minus pole contact 5b.
- the minus-pole contacts 5a and 5b are formed so as to have a different length from each other, the minus-pole contacts 5a and 5b may also be formed so as to have a different width from each other as shown in Fig. 5 or to have a different thickness from each other as shown in Fig. 6.
- minus-pole contacts 5a and 5b are formed so as to have a different shape from each other
- the number of the contacts may also be three or more. In a case where three or more contacts are formed at the electrode, at least two contacts out of these contacts may be formed so as to have a different shape from each other.
- the present invention has been described with reference to an electrode construction of a battery in an IC card, it can be broadly employed to an electrode construction of a battery in an electrical equipment.
Landscapes
- Battery Mounting, Suspending (AREA)
- Credit Cards Or The Like (AREA)
- Power Sources (AREA)
Description
- The present invention relates to an electrode construction of a battery in an electrical equipment, such as an IC card.
- Fig. 7 is a perspective view showing a conventional electrode construction of a battery in an IC card.
- A
battery 1 has aminus pole 2 and a pluspole 3. Aminus electrode 4 has two minus-pole contacts minus pole 2 of thebattery 1 respectively, and afixing part 6 fixed in a battery chamber (not shown) of an IC card. Thefixing part 6 is electrically connected with an electric circuit (not shown) of the IC card, the electric circuit having semiconductor elements to store storage data. Both of the minus-pole contacts - A plus
electrode 7 has two plus-pole contacts pole 3 of thebattery 1 respectively, 80 and afixing part 9 fixed in the battery chamber of the IC card. Thefixing part 9 is electrically connected with the electric circuit of the IC card. Both of the plus-pole contacts - When the
battery 1 is detachably installed in the battery chamber of the IC card, theminus pole 2 is electrically connected with theminus electrode 4 through the minus-pole contacts plus pole 3 is electrically connected with the pluselectrode 7 through the plus-pole contacts battery 1 is supplied to the electric circuit of the IC card through the minus and pluselectrodes - Now, the minus-
pole contacts minus electrode 4 have a characteristic frequency ω, respectively. The characteristic frequency ω is given by the following definition:
where ℓ is a length of the minus-pole contact, E is a longitudinal section modulus, I is a moment of inertia, and m is a linear density. - As is apparent from the definition (1), the minus-
pole contacts pole contacts - Therefore, when an oscillation having a frequency resonating with respect to the characteristic frequency of the minus-
pole contacts pole contacts minus pole 2 of thebattery 1, whereby the power supply from thebattery 1 to the electric circuit of the IC card is cut off eliminating the storage data stored in the semiconductor elements of the electric circuit. - Accordingly, a principal object of the present invention is to provide an electrode construction of a battery in an electrical equipment which can maintain a power supply from the battery through the minus and plus electrodes in a reliable manner, even if an oscillation with any frequency is applied to the electrical equipment and the respective electrodes.
- The present invention is directed to an electrode construction of a battery in an electrical equipment, wherein the electrical equipment comprises a battery chamber, a plus electrode and minus electrode provided in the battery chamber, respectively, and a battery having a plus pole to be connected with the plus electrode and a minus pole to be connected with the minus electrode in a state so that the battery is detachably installed in the battery chamber, wherein the plus electrode and/or the minus electrode comprise a plurality of contacts to be connected with the battery, and is characterised by at least two contacts out of the plurality of contacts having a different shape from each other.
- According to the present invention, since at least two contacts out of a plurality of contacts in an electrode have a different shape from each other, the characteristic frequencies of these contacts are different from each other. As a result, when a contact is resonating by the frequency of an oscillation applied to the electrical equipment, the other contact keeps in contact with the battery without resonating.
- These and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
-
- Fig. 1
- is a perspective view showing an IC card to which an embodiment of the present invention is applied;
- Fig. 2
- is a horizontal sectional view of a main part of the IC card;
- Fig. 3
- is a vertical sectional view of the main part of the IC card;
- Fig. 4
- is a perspective view showing an embodiment of an electrode construction according to the present invention;
- Figs. 5 and 6
- are perspective views showing modified examples of an electrode, respectively; and
- Fig. 7
- is a perspective view showing a conventional electrode construction of a battery in an IC card.
- Fig. 1 is a perspective view showing an IC card to which an embodiment of the present invention is applied, Fig. 2 is a horizontal sectional view of a main part of the IC card, Fig. 3 is a vertical sectional view of the main part of the IC card. Fig. 4 is a perspective view showing an embodiment of an electrode construction according to the present invention.
- An
IC card 10 has abody 11 in which anelectric circuit 12 is formed. Theelectric circuit 12 has semiconductor elements to store storage data. Abattery chamber 13 is formed in thebody 11, and thebattery 1 having aminus pole 2 and a pluspole 3 is detachably installed in thebattery chamber 13 through abattery holder 14. Thebattery holder 14 has a supportingpart 15 for supporting thebattery 1 and convexparts 16 for detachably engaging withrecessed parts 17 formed in thebattery chamber 13, respectively. - A
minus electrode 4 has two minus-pole contacts minus pole 2 of thebattery 1, respectively, and afixing part 6 fixed in thebattery chamber 13. Thefixing part 6 is electrically connected with theelectric circuit 12. Both of the minus-pole contacts - A plus
electrode 7 has two plus-pole contacts pole 3 of thebattery 1, respectively, and afixing part 9 is fixed in thebattery chamber 13. Thefixing part 9 is electrically connected with theelectric circuit 12. Both of the plus-pole contacts - When the
battery 1 is detachably installed in thebattery chamber 13 of theIC card 10 through thebattery holder 14, theminus pole 2 of thebattery 1 is electrically connected with theminus electrode 4 through the minus-pole contacts plus pole 3 is electrically connected with the pluselectrode 7 through the plus-pole contacts battery 1 is supplied to theelectric circuit 12 through the minus and pluselectrodes - According to the electrode construction, since the minus-
pole contacts pole contacts pole contact 5a is applied to theIC card 10, the minus-pole contact 5a will oscillate and move away or depart from theminus pole 2 of thebattery 1. However, the minus-pole contact 5b will neither oscillate nor depart from theminus pole 2 at this very frequency which is different from its characteristic frequency, so that the electric power of thebattery 1 will be applied to theelectric circuit 12 through theminus pole contact 5b. - On the other hand, when an oscillation having a frequency resonating with respect to the characteristic frequency of the minus-
pole contact 5b is applied to theIC card 10, the minus-pole contact 5b will oscillate and move away or aepart from theminus pole 2 while the minus-pole contact 5a will neither oscillate nor depart from theminus pole 2 at this very frequency which is different from its characteristic frequency, so that the electric power of thebattery 1 will be applied to theelectric circuit 12 through the minus-pole contact 5a. Thus, it is possible to prevent the storage data stored in the semiconductor elements of theelectric circuit 12 from being eliminated. - In the above embodiment, although the minus-
pole contacts pole contacts - In the above embodiments, although only the minus-
pole contacts pole contacts pole contacts pole contacts - In the above embodiment, although the minus and plus
electrodes - In the above embodiment, although the present invention has been described with reference to an electrode construction of a battery in an IC card, it can be broadly employed to an electrode construction of a battery in an electrical equipment.
- Although the present invention has been described and illustrated in detail, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, the spirit and the scope of the present invention being limited only by the terms of the appended claims.
Claims (5)
- An electrode construction of a battery (1) in an electrical equipment comprising a battery chamber (13), a plus electrode (7) and a minus electrode (4) respectively provided in the battery chamber (13), and a battery (1) having a plus pole (3) to be connected with the plus electrode (7) and a minus pole (2) to be connected with the minus electrode (4) in a state so that the battery (1) is detachably installed in the battery chamber (13), wherein the plus electrode (7) and/or the minus electrode (4) comprises a plurality of contacts (8a, 8b; 5a, 5b) to be connected with the battery (1), characterised by at least two contacts out of the plurality of contacts (8a, 8b; 5a, 5b) having a different shape from each other.
- The electrode construction of a battery in an electrical equipment in accordance with claim 1,
wherein the contacts (8a, 8b; 5a, 5b) are formed in a strip-shape, respectiveley, and have a different length from each other. - The electrode construction of a battery in an electrical equipment in accordance with claim 1 or 2, wherein the contacts (8a, 8b; 5a, 5b) are formed in a strip-shape, respectively, and have a different width from each other.
- The electrode construction of a battery in an electrical equipment in accordance with any of claims 1 to 3,
wherein the contacts (8a, 8b; 5a, 5b) are formed in a strip-shape, respectively, and have a different thickness from each other. - The electrode construction of a battery in an electrical equipment in accordance with any of claims 1 to 4,
wherein the electrical equipment is an IC card (10) which further comprises an electric circuit (12) having semiconductor elements to store storage data, the battery (1) supplying an electric power to the electric circuit (12) to cause the electric circuit (12) to hold the storage data.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP77651/89 | 1989-03-28 | ||
JP1077651A JPH074996B2 (en) | 1989-03-28 | 1989-03-28 | IC card |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0390070A2 EP0390070A2 (en) | 1990-10-03 |
EP0390070A3 EP0390070A3 (en) | 1991-09-04 |
EP0390070B1 true EP0390070B1 (en) | 1994-11-30 |
Family
ID=13639794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90105810A Expired - Lifetime EP0390070B1 (en) | 1989-03-28 | 1990-03-27 | Electrode construction of battery in electrical equipment |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0390070B1 (en) |
JP (1) | JPH074996B2 (en) |
DE (1) | DE69014370T2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07105023B2 (en) * | 1991-04-17 | 1995-11-13 | 松下電器産業株式会社 | Magnetic head gap position adjustment method |
JPH0536559U (en) * | 1991-10-18 | 1993-05-18 | 三菱樹脂株式会社 | memory card |
EP1973202B1 (en) | 2007-03-21 | 2013-06-19 | Siemens Aktiengesellschaft | Contact system with multiple contact plate |
JP2010129433A (en) * | 2008-11-28 | 2010-06-10 | Saxa Inc | Loading structure of cell |
US9033750B2 (en) * | 2012-08-15 | 2015-05-19 | Tyco Electronics Corporation | Electrical contact |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5635835Y2 (en) * | 1975-10-21 | 1981-08-24 | ||
DE2706760C3 (en) * | 1977-02-17 | 1981-03-19 | Novotechnik Kg Offterdinger Gmbh & Co, 7302 Ostfildern | Movable tap |
JPS548476U (en) * | 1977-06-20 | 1979-01-20 | ||
JPS5810819B2 (en) * | 1977-07-12 | 1983-02-28 | 三洋電機株式会社 | Battery electrode connection device |
DE2823285C2 (en) * | 1978-05-27 | 1982-06-16 | Preh, Elektrofeinmechanische Werke, Jakob Preh, Nachf. Gmbh & Co, 8740 Bad Neustadt | Adjustable rotation resistance |
JPS57103260A (en) * | 1980-12-19 | 1982-06-26 | Canon Inc | Battery case |
JPS60179982A (en) * | 1984-02-28 | 1985-09-13 | Canon Inc | External memory pack |
JPS6182663A (en) * | 1984-09-29 | 1986-04-26 | Toshiba Corp | Cell mounting device |
-
1989
- 1989-03-28 JP JP1077651A patent/JPH074996B2/en not_active Expired - Lifetime
-
1990
- 1990-03-27 DE DE69014370T patent/DE69014370T2/en not_active Expired - Fee Related
- 1990-03-27 EP EP90105810A patent/EP0390070B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69014370D1 (en) | 1995-01-12 |
JPH074996B2 (en) | 1995-01-25 |
EP0390070A3 (en) | 1991-09-04 |
DE69014370T2 (en) | 1995-07-13 |
EP0390070A2 (en) | 1990-10-03 |
JPH02253999A (en) | 1990-10-12 |
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