GB2089104A - Improvements relating to dry-cell holders - Google Patents
Improvements relating to dry-cell holders Download PDFInfo
- Publication number
- GB2089104A GB2089104A GB8130401A GB8130401A GB2089104A GB 2089104 A GB2089104 A GB 2089104A GB 8130401 A GB8130401 A GB 8130401A GB 8130401 A GB8130401 A GB 8130401A GB 2089104 A GB2089104 A GB 2089104A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dry
- cell
- cells
- contact
- contact elements
- 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.)
- Granted
Links
Classifications
-
- 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
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- 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)
- Battery Mounting, Suspending (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A holder for dry-cells, for example for use in an electrical re-charging unit for dry-cells, has locating means for a dry-cell or a line of dry-cells disposed end-to-end in electrical series, and electrical contacts for the base and central electrode of the dry-cell or, where there is a line of dry-cells, of the two endmost dry-cells respectively, the first contact being radially offset so as not to make contact with the central electrode of a dry-cell which is placed the wrong way round in the locating means. In a preferred arrangement the locating means is in the form of a channel with steps in its sidewalls so as to provide pairs of shoulders which will support different diameters of dry-cell at different levels; in this arrangement the offset first contacts 18a, 18b, 18c for all the sizes of cell are rigidly interconnected and the second contacts for all the sizes of cell are rigidly interconnected. <IMAGE>
Description
SPECIFICATION
Improvements relating to dry-cell holders
This invention relates to dry-cell holders and has a particularly useful but not exclusive application in any form of apparatus which incorporates one or more dry-cells in conjunction with electronic controls, and in which there is a risk of damage to the apparatus if the cell or cells are disposed the wrong way about. One example of such apparatus is a re-charging unit for re-charging dry-cells.
According to this invention there is provided a dry-cell holder comprising means for locating a dry-cell or a line of coaxially disposed dry-cells and first and second contact elements for respectively engaging the base and central electrode of the dry-cell or, where there is a plurality of coaxially disposed dry-cells, the base of one end dry-cell and the central electrode of the other end dry-cell, the first contact element being offset radially with respect to the second contact element and the central axis of a dry-cell or line of dry-cells supported in the locating means, such that the first contact element fails to make contact with the central electrode of an adjoining dry-cell placed the wrong way about in the locating means.
According to a preferred feature of the invention, the locating means is adapted to locate dry-cells of differing diameters at different levels, contact means being provided which provides a rigidly interconnected set of first contact elements for respectively engaging the bases of dry-cells at said levels and a rigidly interconnected set of said second contact elements for respectively engaging the central electrodes of dry-cells at said levels, each of said first contact elements being offset outwardly with respect to the associated second contact element such that the first contact elements fail to make contact with the central electrodes of dry-cells placed the wrong way about in the locating means.
One embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which:
Figure 1 shows a perspective view of a dry-cell re-charging unit embodying a holder according to the invention,
Figure 2a is a fragmentary cross-section showing a first dry-cell supported on the dry-cell locating means,
Figures 2b and 2c are fragmentary views illustrating a dry-cell supported in correct and incorrect positions respectively in the locating means of
Figure la.
Figure 3a is a view corresponding to Figure 2a and showing a smaller diameter dry-cell on the locating means,
Figure 3b and 33c are fragmentary views illustrating the dry-cell of Figure 3a and correspond to
Figures 2b and 2c respectively.
Figure 4a is a view corresponding to Figure 2a and showing on the locating means the smallest size of dry-cell which the unit is designed to accommodate, and
Figures 4b and 4c are fragmentary views illustrating the dry-cell of Figure 4a and correspond to
Figures 2b and 2c respectively.
Referring first to Figure 1 of the drawings, a re-charing unit for re-chargeable dry-cells is shown.
The base 10 of the unit provides three parallel channels 11 each of which is capable of receiving a dry-cell in any of three diameters. For this purpose each channel has a cross-section as shown in Figure 2a with edges or shoulders 12 for supporting the largest diameter dry-cell accommodated, shoulders 13 for supporting the intermediate size of dry-cell (as shown in Figure 3a), and the bottom 14 and adjacent parts 15 of the sides of the channel supporting the smallest diameter of single-cell dry-cell accommodated, as shown in Figure 4a.
A dry-cell disposed in any one of the three positions has its central electrode engaged by an associated one of three fixed contact elements 17a, 17b, 17c. The base of the dry-cell is engaged by an associated one of three contact elements 18a, 18b, 18e constituted by projections on a metal plate member 19 which has a foot portions 20 disposed underneath the base of the channel. The foot portion 20 is urged towards the contact elements 17 by a spring (not shown) which serves also to connect the contact elements 18 in circuit with the associated contact elements 17.
Since there is a risk of explosion if re-charging commences with a dry-cell in an inverted position, i.e. with its central electrode in electrical contact with the plate member 19 and its base in contact with a contact element 17, the plate member 19 is shaped to produce no electrical contact between itself and the central electrodes in these circumstances.Thus each of the contact elements 18a, 18b, 18c is radially offset with respect to the associated central electrode 17a, 17b 17e to such an extent as to engage only the insulating material surrounding the central electrode as illustrated in Figures 2c, 3c and 4c if the dry-cell is placed in an inverted position, whilst giving the required electrical contact as shown in
Figures 2b, 3b and 4b if the dry-cell is correctly placed.Contact elements 17a, 17b and 17c are disposed in vertical alignment, but contact element 18b is stepped back with respect to contact element 18a, and contact element 18c is stepped back with respect to contact element 186. This ensures that contact elements 18b and 18c do not come into engagement with the central electrode of dry-cells supported on edges 12 and shoulders 13 respectively, but disposed the wrong way round. At the same time, the arrangement permits a reduction in the overall height of the unit.
Figures 2a, 3a and 4a respectively show dry-cells of sizes C, D and AA in position. The illustrated apparatus also provides recesses 20 for receiving small rectangular dry-cells for re-charging.
It will be clearthatthe invention is equally applicable to any apparatus a holder and electrical contacts for one or more dry-cells.
1. A dry-cell holder comprising means for locating a dry-cell or a line of coaxially disposed dry-cells
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (5)
1. A dry-cell holder comprising means for locating a dry-cell or a line of coaxially disposed dry-cells and first and second contact elements for respectively engaging the base and central electrode of the dry-cell or, where there is a plurality of coaxially disposed dry-cells, the base of one end dry-cell and the central electrode of the other end dry-cell, the first contact element being offset radially with respect to the second contact element and the central axis of a dry-cell or line of dry-cells supported in the locating means, such that the first contact element fails to make contact with the central electrode of an adjoining dry-cell placed the wrong way about in the locating means.
2. A dry-cell holder as claimed in claim 1, wherein the locating means is adapted to locate dry-cells of differing diameters at different levels, contact means being provided which provides a rigidly interconnected set of first contact elements for respectively engaging the bases of dry-cells at said levels and a rigidly interconnected set of said second contact elements for respectively engaging the central electrodes of dry-cells at said levels, each of said first contact elements being offset outwardly with respect to the associated second contact element such that the first contact elements fail to make contact with the central electrodes of dry-cells placed the wrong way about in the locating means.
3. A dry-cell holder as claimed in claim 2, wherein the locating means comprises an element providing a channel extending between the set of first contact elements and the set of second contact elements, the width of the channel decreasing stepwisefrom the top thereof to the bottom thereby to provide a channel having sidewalls which are stepped inward towards each other at at least one location in the height of the channel thereby to form at least one pair of shoulders in the sidewalls capable of locating a dry-cell or a line of dry-cells of a predetermined diameter.
4. An electric re-charging unit for a dry-cell which unit incorporates a holder for one or more dry-cells as claimed in any one of claims 1 to 3.
5. An electric re-charging unit for dry-cells substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8130401A GB2089104B (en) | 1980-11-06 | 1981-10-08 | Improvements relating to dry-cell holders |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8035650 | 1980-11-06 | ||
GB8130401A GB2089104B (en) | 1980-11-06 | 1981-10-08 | Improvements relating to dry-cell holders |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2089104A true GB2089104A (en) | 1982-06-16 |
GB2089104B GB2089104B (en) | 1984-02-08 |
Family
ID=26277434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8130401A Expired GB2089104B (en) | 1980-11-06 | 1981-10-08 | Improvements relating to dry-cell holders |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2089104B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0590264A1 (en) * | 1992-09-29 | 1994-04-06 | Leica Camera GmbH | Battery holder for a camera |
EP2720287A1 (en) * | 2012-10-10 | 2014-04-16 | ABB Technology AG | Incorrect polarity protection |
-
1981
- 1981-10-08 GB GB8130401A patent/GB2089104B/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0590264A1 (en) * | 1992-09-29 | 1994-04-06 | Leica Camera GmbH | Battery holder for a camera |
EP2720287A1 (en) * | 2012-10-10 | 2014-04-16 | ABB Technology AG | Incorrect polarity protection |
Also Published As
Publication number | Publication date |
---|---|
GB2089104B (en) | 1984-02-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19931008 |