CN2250600Y

CN2250600Y - Internal fixed substituted battery for 7.2V lithium battery of mobile telephone

Info

Publication number: CN2250600Y
Application number: CN95226866U
Authority: CN
Inventors: 符敦基
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-12-01
Filing date: 1995-12-01
Publication date: 1997-03-26
Anticipated expiration: 2005-12-01

Abstract

The utility model relates to a battery structure of a mobile phone, used for replacing a 7.2V Lithium battery unit in the mobile phone, and comprising a battery unit, a case combined of a slide rail and a mobile phone upper slide groove, a plurality of back stop pieces and a battery holder for containing the battery unit. The battery unit is formed by the series connection of five 1.2V nickel-hydrogen or nickel-cadmium batteries. A clamping pin on the case is inserted and clamped in a clamping groove of the battery holder. A block card is inserted in a block card containing groove of the battery holder. Lugs on both outside surfaces of the case can avoid that the mobile phone with the replaced battery unit is inserted in an original 7.2V mobile phone charger for charging. The utility model can save fabricating costs and is convenient to manufacture.

Description

The built-in replacement battery of mobile phone 7.2V lithium battery

The utility model relates to a kind of portable telephone device, relates to the built-in replacement battery structure of mobile phone or rather, the battery pack structure of 7.2V series lithium battery group on particularly replaceable Siemens S4 or the CM-DS1000 of the Sony type mobile phone.

At present, what use in Siemens S4 or the CM-DS1000 of the Sony type mobile phone is the lithium battery group of 7.2V series, its cost is Duoed more than one times than ni-mh (Ni-MH), NI-G (Ni-Cd) battery, and manufacturing technology uniqueness, therefore replacement battery pack that at home must the replaceable lithium battery group of development before the manufacturing technology prematurity of lithium battery is to alleviate the pressure that industrial quarters was faced.

The purpose of this utility model is to design the replacement battery pack structure of a kind of Ni-MH battery group with 6V series, the alternative 7.2V series of nickel-cadmium cell group lithium battery group for mobile phone.

In the product line of ni-mh or nickel-cadmium cell, the sign voltage of every battery is 1.2V, needs could constitute the 6V battery pack with 5 battery series connection, could constitute the 7.2V battery pack with 6 battery series connection.And in the product line of lithium battery, the sign voltage of every battery is 3.6V (Sony's lithium battery), can constitute the battery pack of 7.2V with 2 battery series connection.To substitute the lithium battery group of 7.2V with ni-mh or nickel-cadmium cell group, traditional way is to use 6 series-connected cells, but with regard to present technology, 6 ni-mhs or nickel-cadmium cell directly be inserted under the condition of not losing too many battery capacity in the battery of mobile telephone groove of above-mentioned two kinds of models and can't realize.

The applicant thinks after the requirement to battery pack in Accurate Analysis lithium battery characteristic and Siemens S4 type mobile phone and can replace original 7.2V lithium battery group with 5 battery series connection (6V) that its reason is described as follows and asks the lithium battery discharge characteristic curve of comparison diagram 1 and ni-mh or the nickel-cadmium cell discharge characteristic curve of Fig. 2.The voltage that the discharge of lithium battery shown in Fig. 1 is stopped a little is 2.7V, the discharge of the two series batteries point voltage of stopping is 5.4V, the discharge point voltage of stopping of 5 series connection Ni-MH batteries is 5V among Fig. 2, even therefore stop a little in discharge, still can make Ni-MH battery provide capacity more than 90% to Siemens's S4 mobile phone, and remaining capacity can be used for preventing that Ni-MH battery is because of long-time idle excessive leak electricity naturally high internal resistance problem of bringing and the difficult charging problem that is caused that is produced, and 5 series connection Ni-MH batteries (600mAH) just can be inserted in the battery case of mobile phone such as Siemens S4, also solved simultaneously the problem that can't replace that causes because of the volume difference (among Fig. 1 transverse axis be discharge time axle unit be hour H, the longitudinal axis is that discharge voltage axle unit is volt V, LSQ86348, LSR18650, LSR18835 is the lithium battery model, lithium battery discharge curve during two dashed curves are represented to develop, battery charge characteristic 4.20V 5H 1.3A, battery discharge characteristic 0.5A 2.7v; Transverse axis is an efficient among Fig. 2, and the longitudinal axis is a voltage, and curve V is 5 Ni-MH battery series connected battery voltages, and the single battery capacity is 600mAH, discharge 0.5A, 5v stops).

In sum, specific purposes of the present utility model are the built-in replacement batteries of a kind of mobile phone of design, can be combined as a whole with the battery cover of mobile phone, but the user can not insert replacement battery pack of the present utility model in the charger of former lithium battery mobile phone again, and can only use other charger to charge for it.

The built-in replacement battery of the utility model mobile phone 7.2V lithium battery, be placed in the battery case of mobile phone, comprise battery pack, the shell that combines with sliding ditch on slide rail and the mobile phone and the battery tray of set battery group, be respectively equipped with power supply contact on the shell surface and in the battery tray, it is characterized in that:

Described battery pack is made of ni-mh or the nickel-cadmium cell series connection of 5 1.2V.

Described shell upper end is a section, and section end central position is convexly equipped with a drawing piece, and a projection is respectively established in shell two lateral surface lower ends, and four jiaos of shell two medial surfaces and central position are respectively established the engaging pin, and shell bottom medial surface is provided with the engaging projection; Also include retaining piece; Described battery tray both sides engage the placement of foot corresponding position and are provided with slot that supplies engaging pin inlay card and the retaining piece storage tank that supplies the intercalation retaining piece with described shell.

The utility model is replaced the 7.2V built-in battery group that constitutes with 2 3.6V lithium batteries in the mobile phone with the ni-mh of 5 1.2V or the 6V battery pack of nickel-cadmium cell series connection formation, is combined as a whole with mobile phone, and can not loses too many battery capacity.

Further specify technology of the present utility model below in conjunction with the embodiment accompanying drawing.

Fig. 1, lithium battery discharge characteristic curve.

Fig. 2, Ni-MH battery discharge characteristic curve.

Fig. 3, the built-in replacement battery of mobile phone perspective view.

Fig. 4, the three-dimensional decomposition texture schematic diagram of the built-in replacement battery of mobile phone.

Fig. 5, the built-in replacement battery case of mobile phone one of are schemed with combining of battery tray.

Fig. 6, the built-in replacement battery case of mobile phone and battery tray combine two of figure.

Fig. 7, the built-in replacement battery of mobile phone one of are schemed with combining of mobile phone.

Fig. 8, the built-in replacement battery of mobile phone and mobile phone combine two of figure.

Addressed before Fig. 1, Fig. 2 and repeated no more.

Referring to Fig. 3, Fig. 4, the built-in replacement battery of mobile phone mainly comprises battery pack 1, shell 2, battery tray 3 and some retaining pieces 4, as shown in Figure 4.

Battery pack 1 is made of 5 ni-mhs or nickel-cadmium cell 11 series connection.Shell 2 upper ends form section, be convexly equipped with a drawing piece 21 in section end central position, respectively establish a projection 22 in lower surface, 2 liang of outsides of shell, establish slide rail 23 in 2 liang of inner top side of shell, the appropriate position of shell 2 end face tail ends is embedded power supply contact 26 (as shown in Figure 3), appropriate position in shell 2 inner four jiaos and central authorities is set up engaging pin 24 separately, is formed with engaging projection 25 on the inner face of shell bottom.Ccontaining battery pack 1 in the battery tray 3 is established power supply contact 33 on one end, establish the storage tank 32 of slot 31 and retaining piece 4 on the battery tray 3 with the corresponding position that engages pin 24 of shell 2.

During the assembled battery group, can at first battery pack 1 be inserted in the battery tray 3, and be connected with power supply contact 33 referring to Fig. 5, Fig. 6; As shown in Figure 5, because the width of engaging pin 24 is less than the length of slot 31, so shell 2 slides before and after can be on battery tray 3 engaging pin 24 inlay cards that make shell 2 again in the slot 31 of battery tray 3; At last retaining piece 4 is mounted in one by one in the retaining piece storage tank 32 as shown in Figure 6, can avoids problem (high-energy battery is dangerous property when improper use) because of battery pack improper short-circuit fire that causes of dismounting or electrolyte outflow.

Referring to Fig. 7, at first battery tray 3 is inserted in the battery case of mobile phone 5 when being assembled into battery pack of the present utility model in the mobile phone 5, the slide rail 23 of shell 2 is engaged with the sliding ditch 51 of mobile phone 5, promote shell 2 at last drawing piece 21 and engaging projection 25 are combined with mobile phone 5.

Should insert charging in the corresponding charger owing to adopt the mobile phone of the utility model battery pack, but because of the charge condition of lithium battery is different from ni-mh or nickel-cadmium cell, so the design establishes projection 22 on shell 2, to stop mobile phone 5 to insert the attempt of charging in the lithium battery charger, to guarantee safety operation.

Replacement battery of the present utility model is after trial production and trying out, and the advantage of reducing cost arranged, being convenient to make can reach more than 20 hours through charging measurement service time.Replacement battery structure of the present utility model can be combined into one with the battery cover of mobile phone, prevents the effect that battery separates with battery cover simultaneously in addition.

Claims

1, a kind of built-in replacement battery of mobile phone 7.2V lithium battery, be placed in the battery case of mobile phone, comprise battery pack, the shell that combines with sliding ditch on slide rail and the mobile phone and the battery tray of set battery group, be respectively equipped with power supply contact on the shell surface and in the battery tray, it is characterized in that:

2, the built-in replacement battery of mobile phone 7.2V lithium battery according to claim 1, it is characterized in that: described shell upper end is a section, section end central position is convexly equipped with a drawing piece, a projection is respectively established in shell two lateral surface lower ends, four jiaos of shell two medial surfaces and central position are respectively established the engaging pin, and shell bottom medial surface is provided with the engaging projection; Also include retaining piece; Described battery tray both sides engage the placement of foot corresponding position and are provided with slot that supplies engaging pin inlay card and the retaining piece storage tank that supplies the intercalation retaining piece with described shell.