MXPA99004479A - Bater connection device - Google Patents

Abstract

A battery connection apparatus (116) has a housing (1706) with two ends (1708 and 1709) and a surface (1712) extending between the ends (1708, 1709). The housing (1706) is thin, such that the surface (1712) is substantially larger in area than the ends (1708, 1709). A battery (1702) is placed in the housing (1706). The apparatus (116) has coupling projections (1722, 1800) extending from each end (1708 and 1709). The apparatus (116) also has contacts (1760-1763) located on the surface (1712) instead of at one end (1708 and 1709). The contacts (1760-1763) are electrically connected to the battery (1702). This apparatus (116) is kept only as a low profile battery pack, or it may further include structure resident in an electronic device (100) for connecting the battery (1702) to the electronic circuitry (1700) of the electronic device (100) to make a reduction in thickness of the for factor

Description

BATTERY CONNECTION DEVICE FIELD OF THE INVENTION The present invention relates generally to batteries and more particularly to devices for connecting batteries for use as power supplies. BACKGROUND OF THE INVENTION Portable electronic devices, including wireless telephone devices such as cell phones, are powered by a battery or electrochemical battery cell, for short. The battery is electrically connected to the electronic circuitry of the portable electronic device by means of a connection device. The connection apparatus includes a housing that encloses the battery and a housing that encloses the electronic circuitry. The housings employ reciprocal coupling devices for their joining and separation of the battery to and from the electronic circuitry. Such removability is important since it allows the replacement of batteries that have been discharged through the operation of the electronic circuitry. Examples of known battery connection apparatuses are described in the U.S. Patent. No. 5,436,088 by Castañeda y cois, entitled "Battery Support" ("Battery Cradle"), issued July 25, 1995 and assigned to Motorola, Inc .; and the U.S. Patent. No. 4,532,194 by Liautaud et al, entitled "Housing for a Battery Operated Transceiver" ("Housing for a Battery Operated Transceiver"), issued July 30, 1985. To remain competitive in the market for portable electronic devices, manufacturers they must work continuously with respect to the miniaturization of such devices. In any effort to reduce the thickness of the devices, the batteries become thinner. As a result, a need has arisen for a new battery connection apparatus capable of accommodating a thin battery without sacrificing the reduction in thickness obtained by the thin battery. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a portable electronic device in a closed position; Figure 2 is a perspective view of the device of Figure 1 in an open position; Figure 3 is a top, left, rear exploded perspective view of a lower housing of the device of Figure 1, showing a battery connection apparatus incorporated in all or part of a cover, a battery pack, a rear housing portion, a transceiver board and a front housing portion; Figure 4 is a bottom, left side, rear exploded perspective view of the lower housing of the device of Figure 1, showing the battery connecting apparatus of Figure 3, showing a portion of the battery pack using a window of extension; Figure 5 is a bottom plan view of the battery pack of Figure 3; Figure 6 is a perspective view of an interior surface of the rear housing portion of the lower housing of the device of Figure 1, showing the springs of the battery connecting apparatus of Figure 3 broken away therefrom; Figure 7 is a top perspective view, left and rear side of the lower housing of the device of Figure 1, showing the battery pack received by the lower housing; Figure 8 is a first cross-sectional view of the battery pack received by the lower housing, taken along the lines of section 8-8 in the Figure V; and Figure 9 is a second cross-sectional view of the battery pack received by the lower housing taken along section lines 9-9 in Figure 7.

DETAILED DESCRIPTION OF THE PREFERRED MODALITIES A battery connection device has a housing with two ends and a surface extending between the ends. The housing is thin, in such a way that the surface is substantially larger in area than either end. A battery is placed in the housing. The apparatus has a projection extending from each end. The apparatus also has contacts that are located on the surface of the housing instead of at one end of the housing. The contacts are electrically connected to the battery. This apparatus is maintained only as a low-profile battery pack or may also include a resident structure in an electronic device for connecting the battery to the electronic circuitry of the electronic device to perform a reduction in thickness of the form factor. The additional structure of the apparatus includes the following: a second housing containing the electronic circuitry and having a cavity for receiving the housing of the battery pack; receiving slots in the cavity to receive the projections; and contacts, electrically connected to the electronic circuitry, in the cavity to couple them with the contacts of the battery pack. A portable electronic device 100 is illustrated in Figures 1 and 2, as a wireless telephone device or, more particularly, a cellular telephone. The electronic device 100 employs an antenna 102 and a transceiver circuit 1700 of Figure 3 to communicate wireless signals to and from one or more remote devices. The antenna 102 of Figure 1 is carried in a lower housing 104 of the device 100, while the transceiver circuit 1700 is carried on a printed circuit board 1701 of Figure 3 which is placed between the housing portions, front and rear, 106 and 108, of the lower housing 104, which are coupled parallel to the joint 110. An upper housing 112 of the radiotelephone 100 is rotatably coupled to the lower housing 104 through a link 114, such that the electronic device 100 moves from a closed or stowed position, shown in Figure 1, to an open or in use position, shown in Figure 2. In the open position, a user operates the electronic device 100 through a user interface of a headset 202, a display screen area 204, a keypad 206 and a microphone area 208. The electronic device 100 is powered by a battery 1702 of Figure 3, which it is coupled to the transceiver circuit 1700 through a battery connecting apparatus 116, of which a separable cover 118 is shown in Figures 1 and 2 to be attached to the rear portion. Battery 1702, which is illustrated in dotted lines in the Figure 3 and shown in solid lines in Figures 8 and 9, is contained within a battery pack 1704 of the battery connecting apparatus 116. The battery 1702 is of a substantially standard rectangular solid shape that is exactly molded by a housing 1706 of the battery pack 1704 surrounding the battery 1702. The housing 1706 has a tray portion that is molded from polycarbonate or other suitable material to have ends, front and rear, 1708 and 1709; a right side 1710 extending, between and orthogonal to, the ends 1708 and 1709 and a joining end 1708 at the edge 1714; a left side 1711 extending, between and orthogonal to, the ends 1708 and 1709 and a joining end 1708 at the edge 1716; and a lower surface 1712 extending, between and orthogonal to, the ends and sides 1708-1711 and a joining end 1708 at the edge 1718. The tray portion receives and supports the battery 1702. An adhesive label 1717, which it defines an upper surface 1713 of the housing 1706, covers the battery 1702 and partially overlocks the ends, sides and surface 1708-1712. Adhesive label 1717 is die-cut from mylar or other suitable material. Battery 1702 and housing 1706 are thin, as exemplified by surfaces 1712 and 1713, having an area substantially larger than either end and sides 1708-1711. In a preferred embodiment, a height 1720 of the end 1708 (and end 1709) is approximately 7 mm; a length 1721 of the end 1708 (and end 1709) (i.e., the width of the housing 1706) is about 35 mm; and a distance 1719 between the ends 1708 and 1709 (i.e., the length of the surface 1712 and the length of the housing 1706) is about 50 mm. Battery pack 1704 has coupling projections 1722, 1723, 1800 and 1801, as shown in Figures 3-5, carried in housing 1706. Projections 1722 and 1723 are located on end 1708 at edge 1718 to extend in a manner coplanar with the surface 1712. The projection 1722 is also located on the right middle part of the end 1708 (i.e., between the intermediate part of the end 1708 and the edge 1714), such as approximately 1 mm from the edge 1714. The projection 1723 is further located on the middle left side of the end 1708 (i.e., between the intermediate part of the end 1708 and the edge 1716), such as about 1 mm from the edge 1716. The projections 1722 and 1723 have respective distal ends 1726 and 1727 with rectangular surfaces, substantially planar, parallel to the end 1708. In the illustrated embodiment, each of the distal ends 1726 and 1727 are approximately 3 mm wide, approximately 2 mm high and approximately 1.85 from the end 1708. Projections 1800 and 1801 are located on the middle parts, left and right, of the end 1709, respectively, such as at approximately 4 mm from sides 1710 and 1711, respectively. The projections 1800 and 1801 have respective upper surfaces 1802 and 1803 which are parallel to the surfaces 1712 and 1713 of the housing 1706, and respective lower surfaces 1804 and 1805 that are bent at an angle with respect to the end 1709 of the housing 1706. A distant end 1806 of the projection 1800 is formed from the convergence of the surfaces, upper and lower, 1802 and 1804, and a distal end 1807 of the projection 1801 is formed from the convergence of the surfaces, upper and lower, 1803 and 1805. The distal ends 1806 and 1807 are smaller in area than the distal ends 1726 and 1727 of the projections 1722 and 1723. In the illustrated embodiment, the bottom surfaces 1804 and 1805 form an angle 1808, which is preferably 35 degrees, but may alternatively be anywhere between 30 degrees and 70 degrees, with respect to end 1709 of housing 1706; and the distal ends 1806 and 1807 are approximately 2 mm wide and approximately 1.2 mm from the end 1709. One skilled in the art will appreciate that by equipping the battery pack 1704 with the coupling projections 1722, 1723, 1800 and 1801, instead of with the coupling cavities of the prior art battery connecting apparatuses, no additional space needs to be reserved for the cavities at the ends 1708 and 1709; thus allowing the reduction in length of the housing 1706 (i.e., the length 1719) and a better adjustment of the housing 1706 to the solid rectangular shape, standard of the battery 1702. The battery pack 1704 has elongated fins 1900 and 1728 located on the sides, right and left, 1710 and 1711, respectively, of the housing 1706. In particular, the flap 1900 is located in the front middle portion of the 1710 side (ie, between the intermediate part of the 1710 side and the edge 1716), while that flap 1728 is located in the front mid-portion of side 1711 (i.e., between the intermediate part of side 1710 and edge 1714). The battery pack 1704 has contacts 1730, 1731, 1732 and 1733 carried on the surface 1712 of the housing 1706. The contacts 1730-1733 are located on the front middle portion of the surface 1712 (i.e., between the intermediate part of the surface 1712 and end 1708), such that a portion of each of the contacts 1730-1733 overlaps the edge 1718. The contacts 1730-1733 are placed on the surface 1712, the longest surface of the housing 1706, thus which can be sized to ensure exact connectivity. In the illustrated embodiment, each of the contacts 1730-1733 has a length 1901, such as approximately 8 mm, which is greater than the height 1720 of the end 1708, a width of approximately 2.5 mm and a space from the next contacts 1730-1733 of about 1 mm. The contacts 1730-1733 are formed of laminated beryllium copper or other suitable metallic material and, preferably, are molded by insertion into the housing 1706 to be fixed in a position substantially parallel to the surface 1712. The contacts 1730-1733 are electrically connected to battery 1702 and battery circuitry (not shown) placed in housing 1706 through electric spot welding or other suitable process. In this way, the battery connecting apparatus 116 is made in an easily portable, dimensionally restrained battery pack - the battery pack 1704. The projections 1722, 1723, 1800 and 1801 of the battery pack 1704 are suitably located and they are sufficient in number to allow capture by any of the numerous possible coupling facilities. Contacts 1730-1733 are sufficient in location, dimension and space to allow easy and accurate connectivity. The benefits of the battery pack 1704 will be more apparent from the description that follows. The battery connecting apparatus 116 can be further expanded to include portions of the electronic device 100 that capture the battery pack 1704 and electrically connect the battery 1702 to the electronic circuitry of the transceiver circuit 1700. As shown in Figures 3 and 4, the battery connecting apparatus 116 further includes the lower housing 104, which has the electronic circuitry of the transceiver circuit 1700 placed therein and is adapted to receive the housing 1706 of the battery pack 1704 in a cavity 1740. The cavity 1740, as well as the lower housing 104, it is molded from polycarbonate or other suitable material to have end walls, front and rear, 1742 and 1743; a right side wall 1744 extending, between and orthogonal to, the end walls 1742 and 1743 and attaching the end wall 1742 to the corner 1810; a left side wall 1745 extending, between and orthogonal to, the end walls 1742 and 1743 and joining the end wall 1742 at the corner 1811; and a base 1746 extending, between and orthogonal to, the end walls and the side walls 1742-1745 and joining the end wall 1742 to the corner 1812. In the illustrated embodiment, the end walls 1742 and 1743 are separated by a distance 1747, such as approximately 51.25 mm, which is only slightly larger than the length 1719 of housing 1706 of battery pack 1704; the side walls 1744 and 1745 are separated by a slightly varying distance 1748, which varies from about 36.5 mm to about 39 mm and is larger than the width 1721 of the housing 1706 of the battery pack 1704; the end wall 1742 has a height 1814, such as approximately 7 mm as measured between the base 1746 and an upper edge 1749 of the end wall 1742, which is approximately the same height as the 1720 of the end 1708 of the housing 1706 from the 1704 battery pack; and the end wall 1743 has a height 1750, such as about 5 mm as measured between the base 1746 and an upper edge 1751 of the end wall 1743, which is less than the height 1720 of the end 1708 of the housing 1706 of the package of batteries 1704. Rectangular receiving slots 1752, 1753, 1816 and 1817 of battery connecting apparatus 116, as shown in Figures 3 and 4, are formed in cavity 1740 of lower housing 104. Receiving slots 1752 and 1753 they are located in the middle, right and left portions of the end wall 1743, respectively, such as approximately 2 mm from the side walls 1744 and 1745, respectively. The receiving slots 1752 and 1753 are limited adjacent the upper edge 1751 of the end wall 1743 by upper, flat, inner surfaces 1754 and 1755, respectively. The receiving slots 1816 and 1817 are located on the end wall 1742 at the corner 1812 to be aligned coplanarly with the base 1746. The receiving slot 1816 is furthermore located on the right middle part of the end wall 1742 (i.e. intermediate part of end wall 1742 and corner 1810), such as approximately 3.5 mm from corner 1812. Receiving groove 1817 is further located on the left middle portion of end wall 1742 (i.e. the end wall 1742 and the corner 1811), such as approximately 3.5 mm from the corner 1811. In the illustrated embodiment, the receiving slots 1816 and 1817 are slightly more than 3 mm wide and slightly more than 2 mm high , as measured from the base 1746 to the upper edges 1818 and 1819 of the receiving grooves 1816 and 1817, respectively. The receiver slots 1816 and 1817 carry springs 1820 and 1821, respectively, of the battery connecting apparatus 116. The springs 1820 and 1821 are located, in and do not extend out of, the receiving slots 1816 and 1817, respectively. The springs 1820 and 1821, which are shown in Figure 6 separated from the rear portion of the housing 108, are spring nails, formed substantially in V formed from arms, front and rear, integrally joined 2000, 2001, 2002 and 2003. Each of the front arms 2000 and 2001 employs, on an opposite end to the respective ones of the rear arms, 2002 and 2003, a mounting surface having a clamping tooth. Each of the rear arms 2002 and 2003 employ, on an opposite end to the respective ones of the front arms 2000 and 2001, a surface in the shape of a point, which receives the force. The springs 1820 and 1821, which are shown in a rest position in Figure 6, are biased to move the arms 2002 and 2003 to the arms 2000 and 2001, respectively. In the illustrated embodiment, the springs 1820 and 1821 are marked from a thin sheet of beryllium copper or other suitable material and folded in the aforementioned configuration so that each of the arms 2002 and 2003 shows an elastic force of approximately 0.15 N / mm or other suitable value. Springs 1820 and 1821 are assembled in receptacles 2006 and 2007, respectively, which are formed on an interior surface 2008 of the rear portion of the housing 108 behind the receiving grooves 1816 and 1817, respectively. The installation of springs 1820 and 1821 is represented by dotted lines 2009 and 2010, respectively. In the installation, the mounting surfaces of the arms 2000 and 2001 are fastened to the receptacles 2006 and 2007, respectively, while the tips of the arms 2002 and 2003 reside in the receiving slots 1816 and 1817, respectively. Once assembled, the tip of each of the arms 2002 and 2003, in the reception of sufficient force, move in a plane substantially perpendicular to the end wall 1742. Referring again to Figures 3 and 4, the apparatus of battery connection 116 further includes a fastener 1757 for removably securing the cover 118 in a position enclosing the cavity 1740. The fastener 1757 movably carries on the rear portion of the housing 108 and defines a portion of the end wall 1742 In the illustrated embodiment, the fastener 1757 is located in the intermediate part of the end wall 1742 at approximately 6 mm from each of the receiving slots 1816 and 1817, and occupies approximately 70 percent of the height 1814 of the end wall 1742 in that location. Although it leaves very little or no space on the end wall 1742 for additional structures, such as electrical contacts, the fastener 1757 allows the secure clutch of the cover 118, which is molded to match the thin form factor designed by the back portion of the housing 108. The battery connecting apparatus 116 further includes contacts 1760, 1761, 1762 and 1763 mounted on the printed circuit board 1701 and electrically connected to the electronic circuitry of the transceiver circuit 1700. The contacts 1760-1763 are carried in the cavity 1740 of the rear portion of the housing 108, following the assembly of the printed circuit board 1701 between the housing portions, front and rear, 106 and 108, such that the contacts 1760-1763 extend through the openings slotted 1764, 1765, 1766 and 1767, respectively, formed in the base 1746 of the cavity 1740. Each of the contacts 1760-1763 employs a fingernail of spring having a surface in the shape of a tip, which receives the force, which deviates in a plane substantially perpendicular to the base 1746. In the illustrated embodiment, each of the contacts 1760-1763 are formed of beryllium copper or other Suitable metallic material and are bent in the aforementioned configuration, in such a way that the tip-shaped surface of each one shows an elastic force of approximately 0.2 N / mm or another suitable value. To use the portions of the battery connecting apparatus 116 resident in the electronic device 100, the battery pack 1704 is assembled to the lower housing 104, as shown in Figure 7. The battery pack 1704 is oriented at a slight angle, such as 15 degrees, with respect to the base 1746 of the cavity 1740 of Figures 3 and 4 and is placed in the cavity 1740, such that an upper edge of the end 1708 makes contact with the upper edge 1749 of the end wall 1742, as represented by the arrow 2100 of Figure 7 and the broken line showing 2102 of the battery pack 1704. At the contact of the end 1708 and the end wall 1742, the projections 1722 and 1723 of Figures 3 and 4 are receive in the receiving grooves 1816 and 1817, respectively, in such a manner that the distal ends 1726 and 1727 of the projections 1722 and 1723 engage and press the springs 1820 and 1821, respectively. Then, end 1709 of battery pack 1704 moves toward cavity 1740, as represented by arrow 2104 of Figure 7, by sliding the angled surfaces 1804 and 1805 of Figures 3 and 4 of projections 1800 and 1801, respectively, beyond the upper edge 1751 of the end wall 1743. The end 1709 moves until the projections 1800 and 1801 align with the receiving slots 1752 and 1753, respectively. During this movement of the 1709 end of the battery pack 1704, the contacts 1730-1733 of the battery pack 1704 engage and press the contacts 1760-1763, respectively, carried in the cavity 1740. To complete the installation, the battery pack 1704 it releases, allowing springs 1820 and 1821 to extend and propel battery pack 1704 in the direction of arrow 2106 of Figure 7 until projections 1800 and 1801 are received in receiving slots 1752 and 1753, respectively. Once assembled, the battery pack 1704 is safely received in the lower housing 104 and the battery 1702 is electrically connected to the electronic circuitry of the transceiver circuit 1700. As shown in Figure 8, the 1708 end of the battery pack 1704 is juxtaposed, but does not contact, the end wall 1742 of the cavity 1740; end 1709 of battery pack 1704 contacts end wall 1743 of cavity 1740; and the surface 1712 of the battery pack 1704 is juxtaposed with the base 1746 of the cavity 1740. The projection 1801 is received in the receiving slot 1753, and the projection 1723 is received in the receiving slot 1817. The spring 1821 remains partially loaded for exert a force in the direction of the arrow 2200, sufficient to ensure that the end 1709 remains in contact with the end wall 1743 and the projection 1801 remains received in the receiving slot 1753. The combined length of the housing 1706 (ie, the length 1719 of Figure 3) and the projection 1723 is slightly longer than the length 1747 of the cavity 1740, thus ensuring that projection 1723 remains received in the receiving slot 1817. Referring to Figures 8 and 9, the contacts 1760-1763 they exert a force on contacts 1730-1733, respectively, in the direction of arrow 2300 which ensures good electrical connectivity between contacts 1730-1733 and 1760-1763 and also, it ensures the battery pack 1704 via the bypass surface 1803 of the projection 1801 against the surface 1755 of the receiving slot 1753 and the bypass projection 1723 against the upper edge 1819 of the receiving slot 1817. To avoid separation or opening in the joint 110 of the housing portions, front and rear, 106 and 108, which could result from the force exerted by the contacts 1760-1763 in the rear portion of the housing 108 through the battery pack 1704, the Battery connecting apparatus 116 further includes housing snaps 2302 and 2303 placed in line with contacts 1760-1763. The housing snaps 2303 and 2303, which operate to join the housing portions, front and rear, 106 and 108, are formed integrally on the front portion of the housing 106 and the base 1746 of the cavity 1740 next to the walls laterals 1744 and 1745, respectively. In partir, as shown in Figures 3, 4 and 9, each of the snaps 2302 and 2303 is formed of a locking ring and serrated groove. By locating the snaps 2302 and 2303 so that the contacts 1760-1763 are aligned between them, as shown in Figure 9, a solid, more reliable connection of the housing portions, front and rear, is made, 106 and 108, which is able to withstand the forces exerted by contacts 1760-1763. The battery pack 1704 is disassembled from the lower housing 104 by substantially reversing the previously described steps with respect to the installation shown in Figure 7. First, the battery pack 1704 is pushed in the direction opposite the arrow 2106 until the projections 1800 and 1801 are removed from receiving slots 1752 and 1753, respectively; the springs 1820 and 1821 in the receiving grooves 1816 and 1817, respectively, are pressed by the projections 1722 and 1723, respectively; and the end 1708 makes contact with the end wall 1742. Then, the end 1709 of the battery pack 1704 swings in the opposite direction to the arrow 2104 until the projections 1800 and 1801 clear the end wall 1743. Once cleared, the battery pack 1704 can be lifted away from cavity 1740 and lower housing 104. In addition to the releasable connection to electronic device 100, it will be recognized that the battery connecting apparatus 116 formed from battery pack 1704 allows connection to other devices, such as a table loading device. For example, fins 1728 and 1900 of battery pack 1704 allow vertical positioning in a cavity of the loading device, by engaging opposite, vertical guide grooves formed therein. Such placement allows a reduction in the length and total settlement area of the loading device. Although partir modalities have been shown and described, modifications can be made. For example, the battery connecting apparatus 116 could employ only single centralized projections at each of the ends 1708 and 1709 of the housing 1706 to effect the coupling. The fixed, flat contacts 1730-1733 of the housing 1706 could alternatively be replaced with spring contacts. Although shown to be incorporated into a wireless telephone device such as a radiotelephone, it will be recognized that the battery connecting apparatus 116 can also be beneficially used in pagers, laptops, personal digital assistants, wireline telephones, cordless telephones, mobile radiotelephones, players. or portable cassette recorders, standby or universal power supplies, and the like. Therefore, the appended claims attempt to cover all changes and modifications that fall within the scope and real spirit of the invention.

Claims (10)

1. NOVELTY OF THE INVENTION Having described the present invention, it is considered as a novelty and therefore the property described in the following claims is claimed as property. A battery connection apparatus characterized by: a first housing having a battery placed therein, the first housing comprising a first end, a second end and a surface extending therebetween, the surface being substantially larger in area than either end, first and second; a first plurality of contacts carried in the first housing, the first plurality of contacts being located on the surface, the first plurality of contacts being electrically connected to the battery; and a coupling device carried in the housing separate from the first plurality of contacts, removably attaching the coupling device, the first housing to a second housing using only non-movable, fixed coupling members, the coupling members comprising movable, fixed projection coupling device, first and second, carried in the first housing, the first projection being located at the first end, the second projection being located at the second end.
2. 2. A battery connection apparatus according to claim 1, characterized in that the surface joins the first end on a first edge, the first projection is located on the first edge and extends coplanarly with the surface, and the coupling device further comprises a third projection carried on the first housing and extending from the first end, the third projection being located on the first edge and extending coplanarly with the surface. A battery connection apparatus according to claim 1, characterized in that the first housing further comprises sides, first and second, extending between the ends, first and second, the first side joining the first end on a second edge, joining the second side the first end on a third edge, the first projection also being located between the second edge and an intermediate part of the first end, and the third projection also being located between the third edge and the intermediate part of the first end. A battery connection apparatus according to claim 1, characterized in that a distal end of the first projection is a substantially planar rectangular surface parallel to the first end. A battery connection apparatus according to claim 1, characterized in that the second projection is defined by a first surface substantially parallel to the surface of the first housing and a second surface placed at an angle between 30 degrees and 70 degrees with respect to the second end of the first housing. A battery connection apparatus according to claim 1, further characterized in that: the second housing having electronic circuitry placed therein, the second housing being adapted to receive the first housing, the second housing comprising a cavity defined by a first end wall, a second end wall and a base extending therebetween; receiving slots, first and second, formed in the second housing, the first receiving slot being located in the first end wall, the second receiving slot being located in the second end wall; a plurality of contacts carried in the cavity, the second plurality of contacts being located in the base, the second plurality of contacts being electrically connected to the electronic circuitry; and characterized in that, in the reception of the first housing, the first projection is received in the first receiving slot, the second projection is received in the second receiving slot and the surface is juxtaposed with the base, thus coupling the plurality of contacts, first and second, and electrically connecting the battery to the electronic circuitry. A battery connection apparatus according to claim 6, characterized in that the first plurality of contacts is fixed in a position substantially parallel to the surface, and the second plurality of contacts are deflected in a first plane perpendicular to the base. A battery connection apparatus according to claim 7, characterized in that the second housing further comprises first and second housing portions, the housing portions, first and second, being joined in a joint by a plurality of snaps formed around it. of them, the second plurality of contacts being aligned between the opposites of the plurality of snaps. 9. A battery connection apparatus according to claim 6, further characterized by a first spring carried in the first receiving slot. A battery connection apparatus according to claim 9, characterized in that the first spring is a substantially V-shaped spring claw of arms, first and second, integrally joined, the first arm having one end secured to the second housing and the another end joined to the second arm, the second arm having one end joined to the first arm and the other end placed in the first receiving groove, the other end of the second arm being movable in a second plane substantially perpendicular to the first end wall.